<style>
    #fly {
        display: block;
        position: relative;
        margin: 0px auto;
        width: 50%;
        height: 40px;
        padding: 10px;
        border: none;
        border-radius: 3px;
        font-size: 12px;
        text-align: center;
        color: #fff;
        background: #ee8a65;
    }
</style>
<div id="map"></div>
<br />
<button id="fly">Fly</button>
<script>
    var map = new mapboxgl.Map({
        container: 'map',
        style: 'mapbox://styles/mapbox/streets-v11',
        center: [-74.5, 40],
        zoom: 9
    });

    document.getElementById('fly').addEventListener('click', function() {
        // Fly to a random location by offsetting the point -74.50, 40
        // by up to 5 degrees.
        map.flyTo({
            center: [
                -74.5 + (Math.random() - 0.5) * 10,
                40 + (Math.random() - 0.5) * 10
            ],
            essential: true // this animation is considered essential with respect to prefers-reduced-motion
        });
    });
</script>
